The Sims 3 Seasons - Crashes when trying to save

So I installed seasons for some days ago and everything worked fine until yesterday. For some reason the game crashes when I'm trying to save. It happens right after I've build something or changed something. My mods are up to date, so I have no idea why this is happening. I've applied the ultimate fix and also the manual patch.
Any idea what the problem is? xD

No. When I click save, it saves for about 1 minute and then it I get the "Sims 3 has stopped working" message.

I've tried it, the same thing happens.
I tried deleting the family and then made a new one, and saving works fine now as far as I know. I haven't really played it after that.

Hey @Embla and Lady Eldi, did you manage to narrow down he cause of the crash, mines doing the exact same thing. i have only store content from the mediafire account, and all fixes applied correctly. never had my game crash before....
Seems to be getting slower and slower as i play it more......

all your efforts are appreciated GFTW...